CVE-2020-0556

Name: CVE-2020-0556
Creator: NVD / NIST
Published: 2020-03-12T21:15:14.157+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2020-0556 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. Improper access control in subsystem for BlueZ before version 5.54 may allow an unauthenticated user to potentially enable escalation of privilege and denial of service via adjacent access. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

Description

Improper access control in subsystem for BlueZ before version 5.54 may allow an unauthenticated user to potentially enable escalation of privilege and denial of service via adjacent access

Metrics

CVSS 3.1

7.1/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

EPSS Probability

1.03%

59.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Bluez	Bluez	< 5.54
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.10
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Opensuse	Leap	15.1
Opensuse	Leap	15.2

References

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00008.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00055.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00008.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202003-49Third Party Advisory
https://usn.ubuntu.com/4311-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4647Third Party Advisory
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00352.htmlPatch, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00008.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00055.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/06/msg00008.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202003-49Third Party Advisory
https://usn.ubuntu.com/4311-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4647Third Party Advisory
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00352.htmlPatch, Third Party Advisory

Timeline

Published: Mar 12, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-0556?

Improper access control in subsystem for BlueZ before version 5.54 may allow an unauthenticated user to potentially enable escalation of privilege and denial of service via adjacent access

How severe is CVE-2020-0556?

CVE-2020-0556 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2020-0556?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-0556?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST